Understanding the Importance of Evacuated Tube System in Phlebotomy
Summary
- The most commonly used type of tube in phlebotomy is the evacuated tube system.
- Evacuated tubes come in different colors, each indicating the type of additives present in the tube for different blood tests.
- Understanding the different types of tubes used in phlebotomy is essential for accurate sample collection and processing.
Introduction
In phlebotomy, the process of drawing blood for diagnostic testing, the type of tube used plays a crucial role in ensuring accurate and reliable results. There are various types of tubes used in phlebotomy, but the most commonly used type is the evacuated tube system. In this article, we will explore the different types of tubes used in phlebotomy, with a focus on the evacuated tube system and its importance in sample collection and processing.
Evacuated Tube System
The evacuated tube system is the most commonly used type of tube in phlebotomy for blood collection. This system consists of a tube with a pre-vacuumed interior, which allows for blood to flow into the tube automatically when the needle pierces the vein. The vacuum in the tube helps in drawing a specific amount of blood required for testing, making it a precise and efficient method of blood collection.
Colors and Additives
Evacuated tubes come in different colors, with each color indicating the type of additives present in the tube for different blood tests. The colors of the tubes help phlebotomists and laboratory technicians to easily identify the tube needed for a specific test, ensuring accurate sample collection and processing. Some common colors and their corresponding additives include:
- Red: Contains no additives and is used for serum tests.
- Lavender: Contains EDTA (Ethylenediaminetetraacetic acid) and is used for complete blood count (CBC) and blood bank testing.
- Green: Contains Heparin and is used for plasma tests.
- Blue: Contains Sodium Citrate and is used for coagulation tests.
- Gray: Contains Sodium Fluoride and Potassium Oxalate and is used for glucose testing.
Importance of Evacuated Tubes
The use of evacuated tubes in phlebotomy is crucial for accurate blood collection and testing. The vacuum in the tubes ensures that the correct amount of blood is collected for each test, preventing under or overfilling of the tube. This precision is essential for obtaining reliable Test Results and avoiding the need for sample recollection. Additionally, the color-coded system of evacuated tubes simplifies the process of sample identification and processing, reducing the risk of errors in the laboratory.
Other Types of Tubes
While the evacuated tube system is the most commonly used in phlebotomy, there are other types of tubes that serve specific purposes in blood collection and testing. These include:
Syringes
Syringes are sometimes used in phlebotomy for blood collection, especially in cases where a large volume of blood is required or when drawing blood from Difficult Veins. Syringes are manually operated and do not have a vacuum, so the phlebotomist needs to control the flow of blood into the syringe carefully. Syringes are usually used in conjunction with a transfer device to transfer the blood to the appropriate tubes for testing.
Butterfly Needles
Butterfly needles, also known as winged infusion sets, are small butterfly-shaped needles attached to tubing and a collection tube. These needles are often used for pediatric patients or patients with fragile veins, as they are less traumatic and more comfortable than traditional needles. Butterfly needles allow for a more controlled and gentle blood draw, making them suitable for sensitive patients.
Microtainers
Microtainers are small tubes used for collecting small volumes of blood, such as capillary blood samples. These tubes are often used for Point-Of-Care Testing, where only a small amount of blood is required for immediate analysis. Microtainers come in various sizes and contain different additives depending on the type of test being performed.
Conclusion
Understanding the different types of tubes used in phlebotomy is essential for accurate sample collection and processing. The evacuated tube system is the most commonly used type of tube in phlebotomy, providing precision, efficiency, and reliability in blood collection. By utilizing color-coded evacuated tubes with specific additives, phlebotomists and laboratory technicians can ensure that the correct blood samples are collected for various tests, leading to accurate and dependable results. While other types of tubes may be used for specific purposes, the evacuated tube system remains the gold standard in phlebotomy for routine blood collection and testing.
Disclaimer: The content provided on this blog is for informational purposes only, reflecting the personal opinions and insights of the author(s) on phlebotomy practices and healthcare. The information provided should not be used for diagnosing or treating a health problem or disease, and those seeking personal medical advice should consult with a licensed physician. Always seek the advice of your doctor or other qualified health provider regarding a medical condition. Never disregard professional medical advice or delay in seeking it because of something you have read on this website. If you think you may have a medical emergency, call 911 or go to the nearest emergency room immediately. No physician-patient relationship is created by this web site or its use. No contributors to this web site make any representations, express or implied, with respect to the information provided herein or to its use. While we strive to share accurate and up-to-date information, we cannot guarantee the completeness, reliability, or accuracy of the content. The blog may also include links to external websites and resources for the convenience of our readers. Please note that linking to other sites does not imply endorsement of their content, practices, or services by us. Readers should use their discretion and judgment while exploring any external links and resources mentioned on this blog.